108 lines
2.7 KiB
Nix
108 lines
2.7 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.configuration.init-ssh;
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in
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{
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options.configuration.init-ssh = {
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enable = mkOption {
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default = "disable";
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type = with types; enum [ "disable" "prepare" "enabled" ];
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};
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kernelModules = mkOption {
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type = with types; listOf str;
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description =
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"lspci -v will tell you which kernel module is used for the ethernet interface";
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};
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port = mkOption {
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default = 2222;
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type = with types; int;
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};
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authorizedKeys = mkOption {
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type = with types; listOf str;
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default = config.users.users.root.openssh.authorizedKeys.keys
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++ (map (keyFile: lib.fileContents keyFile)
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config.users.users.root.openssh.authorizedKeys.keyFiles);
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};
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hostKey = mkOption {
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default = "/etc/ssh/ssh_host_ed25519_key";
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type = with types; path;
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description = ''
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To generate keys, use ssh-keygen(1):
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# ssh-keygen -t rsa -N "" -f /etc/secrets/initrd/ssh_host_rsa_key
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# ssh-keygen -t ed25519 -N "" -f /etc/secrets/initrd/ssh_host_ed25519_key
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'';
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};
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};
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config = mkMerge [
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(mkIf (cfg.enable != "disable") {
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services.tor = {
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enable = true;
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client.enable = true;
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relay.onionServices.bootup.map = [{ port = 22; }];
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};
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})
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(mkIf (cfg.enable == "enabled") {
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# tor setup
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boot.initrd.secrets = {
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"/etc/tor/onion/bootup" = /var/lib/tor/onion/bootup;
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};
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boot.initrd.extraUtilsCommands = ''
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copy_bin_and_libs ${pkgs.tor}/bin/tor
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'';
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boot.initrd.network.postCommands =
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let
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torRc = (pkgs.writeText "tor.rc" ''
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DataDirectory /etc/tor
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SOCKSPort 127.0.0.1:9050 IsolateDestAddr
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SOCKSPort 127.0.0.1:9063
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HiddenServiceDir /etc/tor/onion/bootup
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HiddenServicePort ${toString cfg.port} 127.0.0.1:${toString cfg.port}
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'');
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in
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''
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echo "tor: preparing onion folder"
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# have to do this otherwise tor does not want to start
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chmod -R 700 /etc/tor
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echo "make sure localhost is up"
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ip a a 127.0.0.1/8 dev lo
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# ifconfig lo up
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ip link set lo up
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echo "tor: starting tor"
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tor -f ${torRc} --verify-config
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tor -f ${torRc} &
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'';
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# ssh setup
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# todo add the ssh host fingerprint to your trusted stuff
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# todo set ssh host key here
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boot.initrd.network.enable = true;
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boot.initrd.network.ssh = {
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enable = true;
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authorizedKeys = cfg.authorizedKeys;
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port = cfg.port;
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hostKeys = [ cfg.hostKey ];
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};
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boot.initrd.availableKernelModules = cfg.kernelModules;
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})
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];
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}
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